Cultivator-blade.



T. V. BARNARD.

GULTIVATOR BLADE.

APPLICATION FILED SEPT.13, 1911.

1,050,714. Y Patented Jan. 1 1,1913.

Elmo/whoa COLUMBIA PLANOOMPH $0., WASHINGTON. D. E

THERIDES V. BARNARD, 0F SGI-IALLER, IOWA.

CULTIVATOR-BLAIDE.

Specification of Letters Patent.

Application filed September 13, 1911.

Patented Jan. 14, 1913. Serial No. 649,050.

To all whom it may concern:

Be it known that I, THERIDES V. BARNARD, a citizen of the United States, residing at Schaller, in the county of Sac and State of Iowa, have invented certain new and useful Improvements in Cultivator Blades, of which the following is a specification, reference being had to the accompanying drawlngs.

My invention relates to new and useful improvements in attachments for cultivators, pulverizers and levelers and the like, and more particularly to an improved blade therefor, and my object is to provide a blade of this character which will effectively cultivate the soil and not allow said soil to adhere thereto.

A further object of the invention resides in providing a blade which is concavo convex, or otherwise known as Scimitar, in elevation, and a still further object resides in so twisting the blade as to cause the same" to be arcuate in cross section.

A further object of the invention resides in providing a blade which has a portion thereof designed arcuate in longitudinal section, and 'a still further object resides in the provision of a blade, the upper and lower ends of which are substantially flat and arranged in vertical planes.

Still another object resides in providing a device which is extremely simple in construction, thereby readily and cheaply manufactured, and one which is very el'fective and useful in operation.

WVith these and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts as willbe hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying part of this application, elevation of a cultivator showing my im-. proved blade applied to use. Fig. 2 is a side elevation of my improved blade showmg the same applied to use on the lower end of a cultivator arm. Fig. 3 is a top plan view of the cultivator blade. Fig. 4 is a section as seen on lines H and Fig. 5 is a section as seen on line 5-5, Fig. 2, and, Fig. 6 is a similar view as seen on line 66, Fig. 2.

In carrying out my invention, I shall refer to the drawing in which similar reference characters designate corresponding parts Figure 1 is a side 'tures of the blade.

drawing forming 'a throughout the several views and in which 1 indicates the frame of a cultivator, levelel or any other desired form of ground-treat-v ing machine having rotatably mounted therebetween, the channel or U-shaped bars 2, one

of which has secured thereto the lower end that as the lever is moved forwardly or rearwardly,

said channel bars 2 will be rotated in their bearings within the frame 1, and in order to retain said lever and correspondingly the channel bars 2 in any adjusted position, the lever 3 is provided with a spring detent 7 operable by means of the grip 8, which is adapted to engage the teeth of the rack 6, and thus, it will be seen that said channel bars may be disposed and held in any desired position. Adapted to be secured to these channel bars 2, are my improved blades 9, and to this extent, I have provided particular means therefor, which will be hereinafter and more particularly described, and which, it will be understood, form no part of this invention, the same being described merely for the sake of showing the function or purpose of certain fea Mounted in said channel-shaped bars 2 and spaced throughout the length thereof, are the sockets 10, which sockets are provided withenlarged circular heads, the outer faces of which are corrugated, and a plurality of bearings 11 is provided, the inner faces of which are also corrugated and adapted to contact with the corrugated faces of the socket heads. The outer faces of said bearings 11 have upper and lower flanges 12 and 13, respectively, formed thereon, and extending through the channel bars and said bearings and sockets are the eye bolts 14, the eyes of which are disposed in the spaces between said flanges 12 and 13, while the free ends thereof are engaged with nuts, whereby said sockets and bearings may be tightly gripped on the channel bars 2. 'It will be seen fro'm'this structure, that torsional adjustment of any bearing on its respective socket may be offected by loosening the nut 14 on the eye bolt 13 sufiiciently to allow the corrugated faces of the bearings and sockets to be disengaged, and when such adjustment has been completed, a rigid relation between the parts may be established and maintained by again tightening the nut. These blades or teeth 9, which form the essential features of this invention, are designed concavo convex, or otherwise known as scimitar-shape, in elevation, said blades each comprising a body portion 15 and'a shank 16 formed at the upper end of the body portion. Then these blades are properly positioned on the cultivator or other machine, the shank 16 thereof extends through openings in the upper and lower flanges 12 and 13 of the bearing 11 and through the eye of the bolt 14:, the extreme free end of said shank 16 being bent at right angles to the general trend thereof to form a lug or the like 17 This lug 17 may be secured in any desired manner to the flange 12, such as by means of an eye bolt 18 to prevent the blade or tooth from readily turning on its bearings, and it will be seen from the structure described, that said blades are capable of 0s cillating movement on their vertical axes through the medium of the eye bolts 14 and also capable of oscillating movement on their horizontal axes through the bearings and sockets described. As stated, these teeth 9 have the blades 15 thereof twisted below the uppe" ends thereof in such manner that a vertical section therethrough, as seen on line 5 5, will disclose the blade at this point arcuate in cross section, as shown at 19, so that the convexed cutting edge of each blade is disposed out of the vertical plane of the cancave or rear edge. This convexed cutting edge of each blade is additionally curved out of the longitudinal plane of the blade proper so that a section as seen on line 66 will disclose a view such as shown in Fig. 6, that is, the blade will be longitudinally arcuate in cross section as well as laterally arcuate, but the ends of the blade proper, as seen from the sections taken on the lines t4 and 11', will be flat. Thus, it will be seen that the convexed cutting edge of the blade, at the soil or draft line, is arcuately designed both laterally and longitudinally, which design of the blade gives a suction thereto while in operation and thereby causes a continuous turning of the soil. This blade, it will be seen, when applied to a cultivator or the like through the means I have heretofore described, will be capable of adjustment both on its vertical and horizontal axes to correspondingly allow the blade to engage the soil at different angles, for obvious purposes, and it will still further be seen that in view of the fact that the channel bars, which indirectly hold the blades, may also be adjusted to various angles, these blades may be adjusted to increase or decrease the cutting capacity thereof. In this connection, it will be seen thatthis form of blade is not alone a surface cultivator, but a general implement which may be used in various ways to accomplish various results.

From the foregoing it will be seen that I have provided an improved ground-treating implement which may be used in connection with a cultivator as a blade therefor or in connection with a pulverizer as a hammock blade therefor, and in any instance, it will be appreciated that the device is extremely simple in construction, thereby readily and cheaply manufactured, and one which is very effective and useful in operation.

\Vhile I have particularly described the means for removably securing my improved blade to a machine, it will be understood that I do not limit myself to the structure described, as the same forms no part of this invention and is merely disclosed and described to indicate the purpose and function of various parts of the blade, and in this connection, it might be stated that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

WVhat I claim is 1. A ground-treating implement, comprising a blade of scimitar shape, the central portion of which is designed arcuate in cross section and the ends thereof being flat.

2. A ground-treating implement of the class described, comprising a scimitarshaped blade having portions thereof designed arcuately in cross section both longitudinally and laterally, the ends of said blade being fiat.

3. A ground-treating implement, comprising a blade designed concavo convex in elevation, said blade having the convexed cutting portion thereof designed arcuately in cross section both longitudinally and laterally, the ends of said blade being fiat, and arranged in vertical planes, a shank formed at the upper end of said blade, and an angular lug formed on said shank.

4. A ground-treating implement, comprising a blade of scimitar shape having a portion intermediate of its ends twisted out of the general plane thereof, said twisted portion being arcuate in cross section and the extreme ends of said blade being flat and arranged in substantially vertical planes.

5. A blade of scimitar shape having a portion intermediate of its ends twisted out of the general plane thereof, said twisted portion being arcuate in cross section at the soil line and the extreme ends of said blade being flat.

6. A ground-treating implement, comprising a blade of scimitar shape having a portion intermediate of its ends twisted out of the general plane thereof, said twisted porthe intermediate portion provided with lattion being arcuate in cross section at the soil eral faces curved in cross section. 10 line, both laterally and longitudinally, and In testimony whereof I hereunto atfix my the extreme ends of said blade being designature in the presence of two Witnesses.

5 signed fiat. THERIDES BARNARD.

7. A ground treating implement compris- Witnesses:

ing a blade of scimitar shape having flat end OZRO J. KRAMER, portions lying in the same plane and having 0. G. ALDRICH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

